Bump HorizontalPodAutoscaler from deprecated v2beta2 to v2

[pierDipi]

Problem

I'm getting this warning on k8s 1.23:

Warning: autoscaling/v2beta2 HorizontalPodAutoscaler is deprecated in v1.23+, unavailable in v1.26+; use autoscaling/v2 HorizontalPodAutoscaler

on

Client Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.0", GitCommit:"c2b5237ccd9c0f1d600d3072634ca66cefdf272f", GitTreeState:"clean", BuildDate:"2021-08-04T18:03:20Z", GoVersion:"go1.16.6", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.3", GitCommit:"816c97ab8cff8a1c72eccca1026f7820e93e0d25", GitTreeState:"clean", BuildDate:"2022-01-26T08:02:07Z", GoVersion:"go1.17.6", Compiler:"gc", Platform:"linux/amd64"}

Persona:
Which persona is this feature for?
*

Exit Criteria
A measurable (binary) test that would indicate that the problem has been resolved.

Time Estimate (optional):
How many developer-days do you think this may take to resolve?
1

[pierDipi]

/triage accepted
/good-first-issue

[knative-prow]

@pierDipi:
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Please ensure the request meets the requirements listed here.

If this request no longer meets these requirements, the label can be removed
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In response to this:

/triage accepted
/good-first-issue

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[gab-satchi]

/assign

[gab-satchi]

Hey @pierDipi, I think this needs to wait till after v1.6. Any way to move to that release?

The minimum supported k8s version for v1.6 is still v1.22 and autoscaling/v2 isn't available in that k8s release.

[liuchangyan]

@gab-satchi Hi, are you still working on this issue ? if not, I would like to take it.

[pierDipi]

Hi @liuchangyan, this needs to wait for a min k8s version bump due to #6424 (comment).

This min k8s version bump is supposed to happen in 1.7 (today we are releasing 1.6), so we can start this after we have removed 1.22 from the KinD testing matrix and added 1.24

[amaanq]

is this still open and available to be taken?

[pierDipi]

Hi @amaanq, yes, this is available to be taken

[matzew]

@amaanq still interested in this? Otherwise I will take it